/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineExecutor.h
For C++ implementations override `virtual boolOnBeginFrame_Implementation()override_ For Python/BP implementations override .ufunction(override=True) def on_begin_frame(self): super().on_begin_frame()
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintNativeEvent, Category="Movie Render Pipeline") void OnBeginFrame()